update from last rec exception: (OperationalError(''),

Traceback (most recent call last):
  File "python3.10/site-packages/django/db/backends/utils.py", line 89, in _execute
    return self.cursor.execute(sql, params)
psycopg2.OperationalError

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "trade_provider/utils.py", line 107, in trade_update_from_last_rec
    if model.objects.exists():
  File "python3.10/site-packages/django/db/models/manager.py", line 87, in manager_method
    return getattr(self.get_queryset(), name)(*args, **kwargs)
  File "python3.10/site-packages/django/db/models/query.py", line 1241, in exists
    return self.query.has_results(using=self.db)
  File "python3.10/site-packages/django/db/models/sql/query.py", line 598, in has_results
    return compiler.has_results()
  File "python3.10/site-packages/django/db/models/sql/compiler.py", line 1530, in has_results
    return bool(self.execute_sql(SINGLE))
  File "python3.10/site-packages/django/db/models/sql/compiler.py", line 1562, in execute_sql
    cursor.execute(sql, params)
  File "python3.10/site-packages/django/db/backends/utils.py", line 102, in execute
    return super().execute(sql, params)
  File "python3.10/site-packages/django/db/backends/utils.py", line 67, in execute
    return self._execute_with_wrappers(
  File "python3.10/site-packages/django/db/backends/utils.py", line 80, in _execute_with_wrappers
    return executor(sql, params, many, context)
  File "python3.10/site-packages/django/db/backends/utils.py", line 84, in _execute
    with self.db.wrap_database_errors:
  File "python3.10/site-packages/django/db/utils.py", line 91, in __exit__
    raise dj_exc_value.with_traceback(traceback) from exc_value
  File "python3.10/site-packages/django/db/backends/utils.py", line 89, in _execute
    return self.cursor.execute(sql, params)
django.db.utils.OperationalError